The First slot machine was invented way back in 1896 by Charles Fey. 11 years later Fey teemed up with the Mills Novelty Company. That brought to the manufacture of a cast iron case called the "Mills Liberty Bell". The satisfying bell ring following a winning combination originated in that antique model. This feature stayed through the years up to the Online casino slots based on Fey's early model.
In 1915 the heavy cast iron was replaced by less expensive and less heavy wooden cabinets. Those cabinets hold a large space in every known casino, followed by the popular trend towards online casino game slots where physical space and weight is no longer an issue. In the early thirties the company made additional changes designing the machines to be much quieter. Then a double jackpot was introduced providing a player with the potential of winning twice in a row. Now days, Online Casinos continue the innovations in the slot machine industry.
